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| author | Rich Felker <dalias@aerifal.cx> | 2014-11-15 12:16:19 -0500 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2015-03-30 01:41:32 -0400 |
| commit | 395e409cc0b89faeaae8d701a18105d020f7aade (patch) | |
| tree | d7b99cc1c4e54ef75aa1ca64de5f1d8b2a651286 | |
| parent | 8c245bf2725f3171ee8f58dab7169e5d682de026 (diff) | |
| download | musl-395e409cc0b89faeaae8d701a18105d020f7aade.tar.gz musl-395e409cc0b89faeaae8d701a18105d020f7aade.tar.bz2 musl-395e409cc0b89faeaae8d701a18105d020f7aade.tar.xz musl-395e409cc0b89faeaae8d701a18105d020f7aade.zip | |
fix behavior of printf with alt-form octal, zero precision, zero value
in this case there are two conflicting rules in play: that an explicit
precision of zero with the value zero produces no output, and that the
'#' modifier for octal increases the precision sufficiently to yield a
leading zero. ISO C (7.19.6.1 paragraph 6 in C99+TC3) includes a
parenthetical remark to clarify that the precision-increasing behavior
takes precedence, but the corresponding text in POSIX off of which I
based the implementation is missing this remark.
this issue was covered in WG14 DR#151.
(cherry picked from commit b91cdbe2bc8b626aa04dc6e3e84345accf34e4b1)
| -rw-r--r-- | src/stdio/vfprintf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/stdio/vfprintf.c b/src/stdio/vfprintf.c index f6e7f38d..9f02f743 100644 --- a/src/stdio/vfprintf.c +++ b/src/stdio/vfprintf.c @@ -572,7 +572,7 @@ static int printf_core(FILE *f, const char *fmt, va_list *ap, union arg *nl_arg, if (0) { case 'o': a = fmt_o(arg.i, z); - if ((fl&ALT_FORM) && arg.i) prefix+=5, pl=1; + if ((fl&ALT_FORM) && p<z-a+1) p=z-a+1; } if (0) { case 'd': case 'i': pl=1; |